package com.psjj.demo1;

public class Demo2 {
    public static void main(String[] args) {
        byte i = 1;
        short j = i;
        int k = j;
        long l = k;
        float m = l;
        double n = m;
        System.out.println(m);
        char a = 'a';
        int b = a;
        long c= b;
        float d = c;
        double e = d;
        System.out.println(e);
    }
}
